工作面上下顺槽断面支护设计方案

Design scheme of the upper and down crossheading support in the mining face

为了使采煤面上下顺槽在回采矿压作用期间围岩塑性流动区范围缩小,防止顶板剧烈下沉和顺槽断面快速收敛,必须短时间内在巷道内形成稳定的内部承载结构。通过把工作面上下顺槽顶板划分为砂岩顶板区段、泥岩顶板区段、砂质泥岩顶板区段,对顺槽顶板不同区段和巷帮提出了有针对性的支护方案。

In order to reduce the plastic flow zone scope of upper and down crossheadings of mining face influenced by the mine pressure,prevent the roof damage and deformation of roadways,it is necessary to form a stable internal bearing structure in the roadway as soon as possible. By dividing the roof of upper and down crossheading into the sandstone roof section,mudstone roof section and sandy mudstone roof section,the corresponding support scheme for different sections of crossheading and roadway side was proposed.